Smart card interface



FIG. 1 is a perspective view of a smart card interface;

FIG. 2 is a top view thereof; and,

FIG. 3 is an enlarged top view thereof.

The illustrative broken line showing of a base surface throughout the drawing figures depicts an exemplary component to which the smart card interface might be applied and forms no part of the claimed design. 

CLAIM The ornamental design for a smart card interface, as shown and described. 